Second, what is the difference between points generated and points returned on WCG?

7X =))

WCG does its own thing and the BOINC portal was a late comer. They reduce their normal WCG credits so that it fit within the BOINC credit "guidelines" that were in use at the time. Now WCG is one of the lower paying projects.

IBM Austin beat! 146th now!
And the next comp starts i6 hours 20min .Given the recent stellar performance it doesn't look as if anyone other than me has been bunkering - but maybe we don't need to bother given our RAC, by which we are 35th in the world.